One of the fundamental challenges with solar, wind and other forms of renewable energy, has to do with balancing the on/off-peak supply and demand for electricity. The sun doesn't continuously shine, the wind doesn't always blow and individual and commercial uses for electricity aren't constant. Pending its final use, electricity needs to be stored whether in batteries or in the system not unlike cars are "stored" on roadways pending arrival at their destination. Managing this aspect of electricity is a lot trickier than pumping fossil fuel into a tank for use whenever.
Therefore, it's not